You are the misleading one. She contributed to the DNC five days before election day 1988. Those who contribute during the final push are the hard core partisans. Dukakis was the nominee that she was supporting.
If she wanted to give money to Dukakis, she'd give money to Dukakis. She gave money to his challenger, Gore. She gave money to the party DNC.
You want to lie - go ahead. You'll have to live with yourself.
The VP candidate that year was Lloyd Bentson, a Democrat from Texas. I believe she also gave him money directly. It is likely she was supporting that ticket, but not because of Dukakis.
Not that it matters. Imagine this, conservatives who will argue that political philosophy doesn't matter in judges, since they don't make law, but then get all upset if a candidate was once a democrat. Even is she was a democrat TODAY, that would only matter if we expected her to be an activist judge.